/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:41:38,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:41:38,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:41:38,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:41:38,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:41:38,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:41:38,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:41:38,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:41:38,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:41:38,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:41:38,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:41:38,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:41:38,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:41:38,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:41:38,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:41:38,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:41:38,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:41:38,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:41:38,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:41:38,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:41:38,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:41:38,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:41:38,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:41:38,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:41:38,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:41:38,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:41:38,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:41:38,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:41:38,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:41:38,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:41:38,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:41:38,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:41:38,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:41:38,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:41:38,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:41:38,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:41:38,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:41:38,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:41:38,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:41:38,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:41:38,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:41:38,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:41:38,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:41:38,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:41:38,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:41:38,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:41:38,649 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:41:38,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:41:38,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:41:38,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:41:38,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:41:38,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:41:38,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:41:38,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:41:38,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:41:38,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:41:38,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:41:38,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:41:38,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:41:38,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:41:38,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:41:38,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:41:38,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:41:38,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:41:38,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:41:38,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:41:38,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:41:38,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:41:38,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:41:38,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:41:38,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:41:38,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:41:39,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:41:39,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:41:39,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:41:39,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:41:39,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:41:39,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-27 20:41:39,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc0f7f5de/80b7f4714abc4369b61ab3c62f9b9365/FLAG6578ab705 [2020-10-27 20:41:39,962 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:41:39,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-27 20:41:39,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc0f7f5de/80b7f4714abc4369b61ab3c62f9b9365/FLAG6578ab705 [2020-10-27 20:41:40,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc0f7f5de/80b7f4714abc4369b61ab3c62f9b9365 [2020-10-27 20:41:40,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:41:40,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:41:40,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:41:40,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:41:40,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:41:40,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:40,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9780bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40, skipping insertion in model container [2020-10-27 20:41:40,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:40,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:41:40,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:41:40,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:41:40,718 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:41:40,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:41:40,929 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:41:40,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40 WrapperNode [2020-10-27 20:41:40,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:41:40,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:41:40,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:41:40,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:41:40,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:40,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:40,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:40,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:41,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:41,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:41,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... [2020-10-27 20:41:41,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:41:41,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:41:41,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:41:41,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:41:41,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:41:41,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:41:41,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:41:41,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:41:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-27 20:41:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-27 20:41:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-27 20:41:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-27 20:41:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-27 20:41:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-27 20:41:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-27 20:41:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-27 20:41:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-27 20:41:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-27 20:41:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:41:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-27 20:41:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-27 20:41:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-27 20:41:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-27 20:41:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-27 20:41:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-27 20:41:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-27 20:41:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-27 20:41:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-27 20:41:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-27 20:41:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-27 20:41:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-27 20:41:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-27 20:41:41,218 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:41:41,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:41:41,218 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:41:41,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:41:41,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 20:41:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:41:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 20:41:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-27 20:41:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-27 20:41:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-27 20:41:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-27 20:41:41,219 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-27 20:41:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-27 20:41:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-27 20:41:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-27 20:41:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-27 20:41:41,220 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-27 20:41:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-27 20:41:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-27 20:41:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-27 20:41:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-27 20:41:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-27 20:41:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-27 20:41:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-27 20:41:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-27 20:41:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-27 20:41:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-27 20:41:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-27 20:41:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-27 20:41:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:41:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-27 20:41:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:41:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:41:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:41:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:41:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:41:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:41:41,700 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:41,745 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:41,745 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:41,757 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:41,776 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:41,776 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:41,784 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,035 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-27 20:41:42,035 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-27 20:41:42,036 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,093 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2020-10-27 20:41:42,093 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2020-10-27 20:41:42,103 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,120 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-27 20:41:42,121 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-27 20:41:42,211 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,220 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:42,221 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:42,221 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,230 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:42,230 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:42,231 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,241 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:42,241 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:42,291 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,338 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-27 20:41:42,338 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-27 20:41:42,378 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,386 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:42,386 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:42,387 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,396 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:42,397 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:42,397 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 20:41:42,405 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 20:41:42,406 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 20:41:42,479 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:41:42,479 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:41:42,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:41:42 BoogieIcfgContainer [2020-10-27 20:41:42,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:41:42,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:41:42,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:41:42,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:41:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:41:40" (1/3) ... [2020-10-27 20:41:42,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184d8279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:41:42, skipping insertion in model container [2020-10-27 20:41:42,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:41:40" (2/3) ... [2020-10-27 20:41:42,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184d8279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:41:42, skipping insertion in model container [2020-10-27 20:41:42,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:41:42" (3/3) ... [2020-10-27 20:41:42,496 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2020-10-27 20:41:42,513 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:41:42,520 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:41:42,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:41:42,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:41:42,592 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:41:42,592 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:41:42,592 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:41:42,593 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:41:42,593 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:41:42,593 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:41:42,593 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:41:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-10-27 20:41:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 20:41:42,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:42,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:42,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1070575043, now seen corresponding path program 1 times [2020-10-27 20:41:42,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:42,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008075763] [2020-10-27 20:41:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:43,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:44,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:44,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:41:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:41:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-27 20:41:44,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 20:41:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:41:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:41:44,466 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:41:44,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:44,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:44,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:44,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:44,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:41:44,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:44,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:44,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:44,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:41:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:44,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008075763] [2020-10-27 20:41:44,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:44,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:41:44,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785909444] [2020-10-27 20:41:44,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:41:44,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:44,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:41:44,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:41:44,602 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 5 states. [2020-10-27 20:41:44,781 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:41:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:46,946 INFO L93 Difference]: Finished difference Result 641 states and 924 transitions. [2020-10-27 20:41:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:46,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 20:41:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:46,968 INFO L225 Difference]: With dead ends: 641 [2020-10-27 20:41:46,969 INFO L226 Difference]: Without dead ends: 417 [2020-10-27 20:41:46,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:41:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-10-27 20:41:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 367. [2020-10-27 20:41:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-27 20:41:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 484 transitions. [2020-10-27 20:41:47,167 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 484 transitions. Word has length 21 [2020-10-27 20:41:47,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:47,168 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 484 transitions. [2020-10-27 20:41:47,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:41:47,168 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 484 transitions. [2020-10-27 20:41:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 20:41:47,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:47,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:47,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:41:47,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:47,175 INFO L82 PathProgramCache]: Analyzing trace with hash 625882864, now seen corresponding path program 1 times [2020-10-27 20:41:47,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:47,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069352848] [2020-10-27 20:41:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:47,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:41:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:41:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 20:41:47,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:41:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:41:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:47,546 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:41:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:47,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:47,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:47,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:47,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:41:47,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:47,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:47,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:47,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:47,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:47,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:47,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:47,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:47,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:41:47,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:47,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069352848] [2020-10-27 20:41:47,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:47,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:41:47,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11983198] [2020-10-27 20:41:47,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:41:47,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:47,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:41:47,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:41:47,636 INFO L87 Difference]: Start difference. First operand 367 states and 484 transitions. Second operand 5 states. [2020-10-27 20:41:47,808 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:41:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:49,257 INFO L93 Difference]: Finished difference Result 424 states and 564 transitions. [2020-10-27 20:41:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:49,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 20:41:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:49,264 INFO L225 Difference]: With dead ends: 424 [2020-10-27 20:41:49,265 INFO L226 Difference]: Without dead ends: 407 [2020-10-27 20:41:49,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:49,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-27 20:41:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 367. [2020-10-27 20:41:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-27 20:41:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 483 transitions. [2020-10-27 20:41:49,335 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 483 transitions. Word has length 21 [2020-10-27 20:41:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:49,335 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 483 transitions. [2020-10-27 20:41:49,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:41:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 483 transitions. [2020-10-27 20:41:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 20:41:49,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:49,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:49,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:41:49,339 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1559854147, now seen corresponding path program 1 times [2020-10-27 20:41:49,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:49,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223329838] [2020-10-27 20:41:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:49,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:49,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 20:41:49,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-27 20:41:49,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:41:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:41:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:41:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:41:49,910 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:41:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:49,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:49,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:49,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:41:49,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:49,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:49,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:49,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:41:49,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:50,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:50,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:50,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:41:50,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:50,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:50,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:50,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223329838] [2020-10-27 20:41:50,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:50,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:50,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488681746] [2020-10-27 20:41:50,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:50,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:50,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:50,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:50,043 INFO L87 Difference]: Start difference. First operand 367 states and 483 transitions. Second operand 6 states. [2020-10-27 20:41:50,205 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:41:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:52,911 INFO L93 Difference]: Finished difference Result 742 states and 990 transitions. [2020-10-27 20:41:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:52,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-27 20:41:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:52,917 INFO L225 Difference]: With dead ends: 742 [2020-10-27 20:41:52,917 INFO L226 Difference]: Without dead ends: 572 [2020-10-27 20:41:52,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:41:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-27 20:41:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 484. [2020-10-27 20:41:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-27 20:41:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 643 transitions. [2020-10-27 20:41:52,991 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 643 transitions. Word has length 29 [2020-10-27 20:41:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:52,991 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 643 transitions. [2020-10-27 20:41:52,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 643 transitions. [2020-10-27 20:41:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 20:41:52,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:52,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:52,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:41:52,993 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:52,993 INFO L82 PathProgramCache]: Analyzing trace with hash -556513675, now seen corresponding path program 1 times [2020-10-27 20:41:52,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:52,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673291853] [2020-10-27 20:41:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:53,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:53,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 20:41:53,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 20:41:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:41:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:41:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:41:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:53,458 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:41:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:53,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:53,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:53,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:41:53,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:53,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:53,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:53,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:53,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:53,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:53,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:53,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:53,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:53,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:53,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:53,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:53,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673291853] [2020-10-27 20:41:53,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:53,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:53,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073523487] [2020-10-27 20:41:53,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:53,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:53,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:53,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:53,573 INFO L87 Difference]: Start difference. First operand 484 states and 643 transitions. Second operand 6 states. [2020-10-27 20:41:53,734 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:41:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:55,914 INFO L93 Difference]: Finished difference Result 1008 states and 1343 transitions. [2020-10-27 20:41:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:55,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-27 20:41:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:55,925 INFO L225 Difference]: With dead ends: 1008 [2020-10-27 20:41:55,926 INFO L226 Difference]: Without dead ends: 714 [2020-10-27 20:41:55,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:41:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-27 20:41:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 672. [2020-10-27 20:41:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2020-10-27 20:41:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 900 transitions. [2020-10-27 20:41:56,044 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 900 transitions. Word has length 31 [2020-10-27 20:41:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:56,044 INFO L481 AbstractCegarLoop]: Abstraction has 672 states and 900 transitions. [2020-10-27 20:41:56,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 900 transitions. [2020-10-27 20:41:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 20:41:56,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:56,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:56,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:41:56,055 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:56,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1447288085, now seen corresponding path program 1 times [2020-10-27 20:41:56,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:56,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222939508] [2020-10-27 20:41:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:56,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:56,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 20:41:56,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-27 20:41:56,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:41:56,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:41:56,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:41:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:56,550 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:41:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:41:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:56,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:56,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:56,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:41:56,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:41:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:56,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:56,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:56,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:41:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:41:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:41:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:41:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:56,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:41:56,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:41:56,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:41:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:41:56,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:41:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:41:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:41:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:41:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:41:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:41:56,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222939508] [2020-10-27 20:41:56,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:41:56,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:41:56,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699466800] [2020-10-27 20:41:56,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:41:56,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:41:56,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:41:56,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:41:56,658 INFO L87 Difference]: Start difference. First operand 672 states and 900 transitions. Second operand 6 states. [2020-10-27 20:41:56,832 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:41:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:41:58,653 INFO L93 Difference]: Finished difference Result 713 states and 947 transitions. [2020-10-27 20:41:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:41:58,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-27 20:41:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:41:58,662 INFO L225 Difference]: With dead ends: 713 [2020-10-27 20:41:58,662 INFO L226 Difference]: Without dead ends: 709 [2020-10-27 20:41:58,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:41:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-27 20:41:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 671. [2020-10-27 20:41:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-27 20:41:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 898 transitions. [2020-10-27 20:41:58,775 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 898 transitions. Word has length 35 [2020-10-27 20:41:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:41:58,776 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 898 transitions. [2020-10-27 20:41:58,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:41:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 898 transitions. [2020-10-27 20:41:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 20:41:58,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:41:58,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:41:58,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:41:58,778 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:41:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:41:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1309836000, now seen corresponding path program 1 times [2020-10-27 20:41:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:41:58,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111942414] [2020-10-27 20:41:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:41:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:41:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:41:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:00,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:00,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 20:42:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-27 20:42:00,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 20:42:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:42:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:00,265 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:00,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:00,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:00,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:00,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:42:00,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:00,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:00,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:00,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:00,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:00,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:00,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:00,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:00,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:42:00,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:00,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:00,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:00,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:00,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:00,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:42:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:00,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:42:00,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:00,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:00,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111942414] [2020-10-27 20:42:00,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:00,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:42:00,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857461918] [2020-10-27 20:42:00,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:42:00,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:00,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:42:00,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:42:00,411 INFO L87 Difference]: Start difference. First operand 671 states and 898 transitions. Second operand 7 states. [2020-10-27 20:42:00,989 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:42:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:03,096 INFO L93 Difference]: Finished difference Result 1029 states and 1392 transitions. [2020-10-27 20:42:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:42:03,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 20:42:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:03,107 INFO L225 Difference]: With dead ends: 1029 [2020-10-27 20:42:03,107 INFO L226 Difference]: Without dead ends: 1025 [2020-10-27 20:42:03,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:42:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-27 20:42:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 782. [2020-10-27 20:42:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-10-27 20:42:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1050 transitions. [2020-10-27 20:42:03,213 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1050 transitions. Word has length 42 [2020-10-27 20:42:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:03,214 INFO L481 AbstractCegarLoop]: Abstraction has 782 states and 1050 transitions. [2020-10-27 20:42:03,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:42:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1050 transitions. [2020-10-27 20:42:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 20:42:03,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:03,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:03,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:42:03,216 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:03,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:03,217 INFO L82 PathProgramCache]: Analyzing trace with hash -365576779, now seen corresponding path program 1 times [2020-10-27 20:42:03,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:03,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614602180] [2020-10-27 20:42:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:03,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:03,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:03,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 20:42:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 20:42:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 20:42:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:42:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:42:03,586 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:03,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:03,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:03,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:42:03,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:03,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:42:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:03,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:03,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:03,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:03,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:03,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:03,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:03,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:03,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:03,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:03,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:03,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:03,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:03,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:03,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614602180] [2020-10-27 20:42:03,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:03,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:42:03,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839108136] [2020-10-27 20:42:03,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:42:03,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:42:03,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:42:03,731 INFO L87 Difference]: Start difference. First operand 782 states and 1050 transitions. Second operand 6 states. [2020-10-27 20:42:03,937 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:42:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:05,790 INFO L93 Difference]: Finished difference Result 810 states and 1085 transitions. [2020-10-27 20:42:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:42:05,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-27 20:42:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:05,798 INFO L225 Difference]: With dead ends: 810 [2020-10-27 20:42:05,798 INFO L226 Difference]: Without dead ends: 806 [2020-10-27 20:42:05,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:42:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-10-27 20:42:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 793. [2020-10-27 20:42:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-10-27 20:42:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1064 transitions. [2020-10-27 20:42:05,891 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1064 transitions. Word has length 41 [2020-10-27 20:42:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:05,892 INFO L481 AbstractCegarLoop]: Abstraction has 793 states and 1064 transitions. [2020-10-27 20:42:05,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:42:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1064 transitions. [2020-10-27 20:42:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 20:42:05,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:05,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:05,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:42:05,894 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:05,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash -435717580, now seen corresponding path program 1 times [2020-10-27 20:42:05,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:05,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151799702] [2020-10-27 20:42:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:05,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:05,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 20:42:05,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 20:42:05,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 20:42:05,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:42:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:06,143 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:06,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:06,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:06,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:42:06,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:06,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:06,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:06,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:06,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:06,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:06,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:06,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:06,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:06,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:06,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:06,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:06,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:06,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:42:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 20:42:06,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:42:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 20:42:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:06,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:06,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:42:06,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:06,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:06,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:42:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:06,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151799702] [2020-10-27 20:42:06,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:06,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:06,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881691253] [2020-10-27 20:42:06,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:06,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:06,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:06,328 INFO L87 Difference]: Start difference. First operand 793 states and 1064 transitions. Second operand 8 states. [2020-10-27 20:42:06,499 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:42:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:08,507 INFO L93 Difference]: Finished difference Result 872 states and 1162 transitions. [2020-10-27 20:42:08,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:42:08,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-27 20:42:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:08,513 INFO L225 Difference]: With dead ends: 872 [2020-10-27 20:42:08,513 INFO L226 Difference]: Without dead ends: 866 [2020-10-27 20:42:08,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:42:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-27 20:42:08,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 834. [2020-10-27 20:42:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-27 20:42:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1114 transitions. [2020-10-27 20:42:08,631 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1114 transitions. Word has length 42 [2020-10-27 20:42:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:08,634 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 1114 transitions. [2020-10-27 20:42:08,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1114 transitions. [2020-10-27 20:42:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 20:42:08,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:08,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:08,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:42:08,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:08,637 INFO L82 PathProgramCache]: Analyzing trace with hash -733217536, now seen corresponding path program 1 times [2020-10-27 20:42:08,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:08,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826132570] [2020-10-27 20:42:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:10,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 20:42:10,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-10-27 20:42:10,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 20:42:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:10,798 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:10,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:10,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:10,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:42:10,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:10,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:10,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:10,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:10,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:10,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:10,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:10,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:10,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:10,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:10,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:42:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:10,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:10,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:42:10,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:42:10,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:10,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826132570] [2020-10-27 20:42:10,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:10,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:42:10,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736802024] [2020-10-27 20:42:10,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:42:10,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:42:10,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:42:10,962 INFO L87 Difference]: Start difference. First operand 834 states and 1114 transitions. Second operand 9 states. [2020-10-27 20:42:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:13,719 INFO L93 Difference]: Finished difference Result 926 states and 1227 transitions. [2020-10-27 20:42:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:42:13,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-27 20:42:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:13,725 INFO L225 Difference]: With dead ends: 926 [2020-10-27 20:42:13,726 INFO L226 Difference]: Without dead ends: 855 [2020-10-27 20:42:13,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-27 20:42:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 838. [2020-10-27 20:42:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-10-27 20:42:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1118 transitions. [2020-10-27 20:42:13,832 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1118 transitions. Word has length 43 [2020-10-27 20:42:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:13,832 INFO L481 AbstractCegarLoop]: Abstraction has 838 states and 1118 transitions. [2020-10-27 20:42:13,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:42:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1118 transitions. [2020-10-27 20:42:13,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 20:42:13,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:13,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:13,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:42:13,834 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:13,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:13,835 INFO L82 PathProgramCache]: Analyzing trace with hash 530388703, now seen corresponding path program 1 times [2020-10-27 20:42:13,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:13,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147449067] [2020-10-27 20:42:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:14,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:14,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 20:42:14,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-27 20:42:14,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 20:42:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 20:42:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:14,720 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:14,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:14,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:14,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:42:14,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:14,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:14,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:14,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:14,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:14,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:14,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:14,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:14,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:14,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:14,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:14,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:14,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:14,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:14,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:14,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 20:42:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 20:42:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:14,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:42:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 20:42:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:14,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:14,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:42:14,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:14,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:14,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147449067] [2020-10-27 20:42:14,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:14,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 20:42:14,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144778881] [2020-10-27 20:42:14,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:42:14,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:14,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:42:14,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:42:14,942 INFO L87 Difference]: Start difference. First operand 838 states and 1118 transitions. Second operand 10 states. [2020-10-27 20:42:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:16,381 INFO L93 Difference]: Finished difference Result 882 states and 1172 transitions. [2020-10-27 20:42:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:42:16,381 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 20:42:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:16,388 INFO L225 Difference]: With dead ends: 882 [2020-10-27 20:42:16,388 INFO L226 Difference]: Without dead ends: 863 [2020-10-27 20:42:16,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:42:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-27 20:42:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 836. [2020-10-27 20:42:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-27 20:42:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1114 transitions. [2020-10-27 20:42:16,485 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1114 transitions. Word has length 43 [2020-10-27 20:42:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:16,486 INFO L481 AbstractCegarLoop]: Abstraction has 836 states and 1114 transitions. [2020-10-27 20:42:16,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:42:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1114 transitions. [2020-10-27 20:42:16,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 20:42:16,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:16,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:16,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:42:16,488 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:16,488 INFO L82 PathProgramCache]: Analyzing trace with hash 840200608, now seen corresponding path program 1 times [2020-10-27 20:42:16,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:16,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860506740] [2020-10-27 20:42:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:16,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:16,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:17,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:17,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 20:42:17,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:42:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-27 20:42:17,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:42:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:42:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 20:42:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:17,262 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:17,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:17,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:17,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:17,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:42:17,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:17,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:17,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:17,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:17,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:17,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:42:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:17,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:17,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:17,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:17,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:42:17,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:17,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 20:42:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:17,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:42:17,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:42:17,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:42:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:17,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860506740] [2020-10-27 20:42:17,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:17,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:42:17,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728589466] [2020-10-27 20:42:17,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:42:17,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:17,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:42:17,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:42:17,486 INFO L87 Difference]: Start difference. First operand 836 states and 1114 transitions. Second operand 9 states. [2020-10-27 20:42:17,651 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:42:18,010 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 20:42:18,434 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:42:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:21,741 INFO L93 Difference]: Finished difference Result 1435 states and 1885 transitions. [2020-10-27 20:42:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:42:21,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-27 20:42:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:21,747 INFO L225 Difference]: With dead ends: 1435 [2020-10-27 20:42:21,748 INFO L226 Difference]: Without dead ends: 880 [2020-10-27 20:42:21,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:42:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-10-27 20:42:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 827. [2020-10-27 20:42:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-10-27 20:42:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1093 transitions. [2020-10-27 20:42:21,867 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1093 transitions. Word has length 46 [2020-10-27 20:42:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:21,867 INFO L481 AbstractCegarLoop]: Abstraction has 827 states and 1093 transitions. [2020-10-27 20:42:21,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:42:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1093 transitions. [2020-10-27 20:42:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:42:21,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:21,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:21,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:42:21,869 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2145519263, now seen corresponding path program 1 times [2020-10-27 20:42:21,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:21,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293787504] [2020-10-27 20:42:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:21,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:21,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:22,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:24,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:24,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:42:24,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:42:24,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3021 [2020-10-27 20:42:24,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 20:42:24,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:42:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:25,111 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:25,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:25,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:25,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:25,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 20:42:25,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:25,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:25,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:25,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:25,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:25,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:25,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:25,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:25,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:25,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:25,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 20:42:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:25,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:25,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:42:25,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 20:42:25,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:42:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:25,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293787504] [2020-10-27 20:42:25,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:25,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 20:42:25,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512954984] [2020-10-27 20:42:25,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:42:25,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:25,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:42:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:42:25,350 INFO L87 Difference]: Start difference. First operand 827 states and 1093 transitions. Second operand 10 states. [2020-10-27 20:42:25,934 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 20:42:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:27,165 INFO L93 Difference]: Finished difference Result 1632 states and 2246 transitions. [2020-10-27 20:42:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:42:27,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-27 20:42:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:27,173 INFO L225 Difference]: With dead ends: 1632 [2020-10-27 20:42:27,173 INFO L226 Difference]: Without dead ends: 1017 [2020-10-27 20:42:27,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-10-27 20:42:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 852. [2020-10-27 20:42:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-10-27 20:42:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1139 transitions. [2020-10-27 20:42:27,293 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1139 transitions. Word has length 50 [2020-10-27 20:42:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:27,293 INFO L481 AbstractCegarLoop]: Abstraction has 852 states and 1139 transitions. [2020-10-27 20:42:27,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:42:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1139 transitions. [2020-10-27 20:42:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 20:42:27,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:27,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:27,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:42:27,296 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 524158534, now seen corresponding path program 1 times [2020-10-27 20:42:27,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:27,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394350881] [2020-10-27 20:42:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:27,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:28,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:28,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 20:42:28,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:28,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-27 20:42:28,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 20:42:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:42:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:28,543 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:28,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:28,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:42:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:28,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:28,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:28,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 20:42:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:42:28,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:42:28,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:28,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:42:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:42:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:28,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394350881] [2020-10-27 20:42:28,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:28,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:28,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245627804] [2020-10-27 20:42:28,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:28,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:28,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:28,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:28,711 INFO L87 Difference]: Start difference. First operand 852 states and 1139 transitions. Second operand 8 states. [2020-10-27 20:42:28,878 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:42:29,369 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:42:31,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:31,478 INFO L93 Difference]: Finished difference Result 957 states and 1249 transitions. [2020-10-27 20:42:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:42:31,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-27 20:42:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:31,483 INFO L225 Difference]: With dead ends: 957 [2020-10-27 20:42:31,483 INFO L226 Difference]: Without dead ends: 607 [2020-10-27 20:42:31,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:42:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-10-27 20:42:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 550. [2020-10-27 20:42:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-27 20:42:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 704 transitions. [2020-10-27 20:42:31,558 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 704 transitions. Word has length 51 [2020-10-27 20:42:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:31,559 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 704 transitions. [2020-10-27 20:42:31,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:31,559 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 704 transitions. [2020-10-27 20:42:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 20:42:31,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:31,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:31,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:42:31,561 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:31,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1165083475, now seen corresponding path program 1 times [2020-10-27 20:42:31,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:31,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809961616] [2020-10-27 20:42:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 20:42:31,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 20:42:31,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 20:42:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:42:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:31,930 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:42:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 20:42:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:31,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:31,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:31,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:31,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:31,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:31,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:31,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:32,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:32,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:32,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:32,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:32,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:32,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:42:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:32,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:32,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:42:32,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:42:32,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:42:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:32,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:32,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:32,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:32,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:32,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 20:42:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:32,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:32,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:32,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:32,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:32,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:32,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:42:32,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:32,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809961616] [2020-10-27 20:42:32,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:32,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:32,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142101144] [2020-10-27 20:42:32,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:32,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:32,078 INFO L87 Difference]: Start difference. First operand 550 states and 704 transitions. Second operand 8 states. [2020-10-27 20:42:32,210 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:42:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:33,438 INFO L93 Difference]: Finished difference Result 870 states and 1125 transitions. [2020-10-27 20:42:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:42:33,439 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-27 20:42:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:33,442 INFO L225 Difference]: With dead ends: 870 [2020-10-27 20:42:33,442 INFO L226 Difference]: Without dead ends: 594 [2020-10-27 20:42:33,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-27 20:42:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 566. [2020-10-27 20:42:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-10-27 20:42:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 727 transitions. [2020-10-27 20:42:33,523 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 727 transitions. Word has length 56 [2020-10-27 20:42:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:33,523 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 727 transitions. [2020-10-27 20:42:33,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 727 transitions. [2020-10-27 20:42:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 20:42:33,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:33,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:33,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:42:33,526 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash -306204691, now seen corresponding path program 1 times [2020-10-27 20:42:33,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:33,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203656483] [2020-10-27 20:42:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:33,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 20:42:33,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:42:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 20:42:33,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 20:42:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:42:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:34,014 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:34,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:34,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:34,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:34,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:42:34,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:34,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:34,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:34,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:34,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:34,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:34,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:34,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:42:34,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:34,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:34,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:34,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:34,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:34,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:34,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:34,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:34,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:42:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 20:42:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:42:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:34,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:42:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:34,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:34,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:42:34,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:34,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:42:34,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:34,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203656483] [2020-10-27 20:42:34,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:34,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:34,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573768058] [2020-10-27 20:42:34,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:34,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:34,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:34,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:34,239 INFO L87 Difference]: Start difference. First operand 566 states and 727 transitions. Second operand 8 states. [2020-10-27 20:42:34,454 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:42:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:36,091 INFO L93 Difference]: Finished difference Result 804 states and 1049 transitions. [2020-10-27 20:42:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:42:36,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-27 20:42:36,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:36,095 INFO L225 Difference]: With dead ends: 804 [2020-10-27 20:42:36,096 INFO L226 Difference]: Without dead ends: 791 [2020-10-27 20:42:36,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:42:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-10-27 20:42:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 627. [2020-10-27 20:42:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-10-27 20:42:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 803 transitions. [2020-10-27 20:42:36,184 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 803 transitions. Word has length 53 [2020-10-27 20:42:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:36,184 INFO L481 AbstractCegarLoop]: Abstraction has 627 states and 803 transitions. [2020-10-27 20:42:36,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 803 transitions. [2020-10-27 20:42:36,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 20:42:36,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:36,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:36,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 20:42:36,187 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:36,188 INFO L82 PathProgramCache]: Analyzing trace with hash 250320966, now seen corresponding path program 1 times [2020-10-27 20:42:36,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:36,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945448051] [2020-10-27 20:42:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:36,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:38,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:38,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:42:38,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:42:38,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1975 [2020-10-27 20:42:38,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:42:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 20:42:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:42:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:38,353 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:38,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:38,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:38,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:38,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:38,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:42:38,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:38,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:38,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:38,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:38,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:38,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:38,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:38,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:38,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:38,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:38,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:38,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:38,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:38,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:38,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:38,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:38,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:38,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:38,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:42:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:38,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:42:38,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 20:42:38,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:42:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 20:42:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:42:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:38,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:38,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:42:38,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:38,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:42:38,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:42:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:38,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945448051] [2020-10-27 20:42:38,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:38,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 20:42:38,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817290065] [2020-10-27 20:42:38,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:42:38,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:38,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:42:38,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:42:38,663 INFO L87 Difference]: Start difference. First operand 627 states and 803 transitions. Second operand 13 states. [2020-10-27 20:42:39,396 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:42:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:40,653 INFO L93 Difference]: Finished difference Result 721 states and 929 transitions. [2020-10-27 20:42:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:42:40,653 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-27 20:42:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:40,660 INFO L225 Difference]: With dead ends: 721 [2020-10-27 20:42:40,660 INFO L226 Difference]: Without dead ends: 714 [2020-10-27 20:42:40,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:42:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-27 20:42:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 660. [2020-10-27 20:42:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2020-10-27 20:42:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 851 transitions. [2020-10-27 20:42:40,748 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 851 transitions. Word has length 54 [2020-10-27 20:42:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:40,748 INFO L481 AbstractCegarLoop]: Abstraction has 660 states and 851 transitions. [2020-10-27 20:42:40,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:42:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 851 transitions. [2020-10-27 20:42:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 20:42:40,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:40,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:40,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 20:42:40,751 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:40,751 INFO L82 PathProgramCache]: Analyzing trace with hash 258902696, now seen corresponding path program 1 times [2020-10-27 20:42:40,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:40,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221083362] [2020-10-27 20:42:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:40,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:42:42,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-27 20:42:42,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:42:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 20:42:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:42:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,255 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:42,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:42:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:42,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:42,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:42,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:42:42,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 20:42:42,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:42:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 20:42:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:42:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:42,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:42,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:42:42,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:42:42,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:42:42,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:42,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221083362] [2020-10-27 20:42:42,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:42,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 20:42:42,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671125264] [2020-10-27 20:42:42,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:42:42,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:42:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:42:42,561 INFO L87 Difference]: Start difference. First operand 660 states and 851 transitions. Second operand 13 states. [2020-10-27 20:42:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:44,600 INFO L93 Difference]: Finished difference Result 712 states and 911 transitions. [2020-10-27 20:42:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:42:44,600 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-27 20:42:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:44,605 INFO L225 Difference]: With dead ends: 712 [2020-10-27 20:42:44,606 INFO L226 Difference]: Without dead ends: 695 [2020-10-27 20:42:44,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:42:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-27 20:42:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 666. [2020-10-27 20:42:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-10-27 20:42:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 856 transitions. [2020-10-27 20:42:44,699 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 856 transitions. Word has length 54 [2020-10-27 20:42:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:44,699 INFO L481 AbstractCegarLoop]: Abstraction has 666 states and 856 transitions. [2020-10-27 20:42:44,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:42:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 856 transitions. [2020-10-27 20:42:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 20:42:44,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:44,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:44,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 20:42:44,702 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:44,702 INFO L82 PathProgramCache]: Analyzing trace with hash 716368876, now seen corresponding path program 1 times [2020-10-27 20:42:44,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:44,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639124681] [2020-10-27 20:42:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:45,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:45,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 20:42:45,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:42:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-27 20:42:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 20:42:45,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:42:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:45,570 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:45,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:45,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:45,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:45,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:45,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:45,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:45,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:45,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:45,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:45,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:45,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:45,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:45,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:45,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:45,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:45,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:45,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:45,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:42:45,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 20:42:45,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:42:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:42:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:45,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:45,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:42:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:45,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:45,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 20:42:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:45,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:42:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:45,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639124681] [2020-10-27 20:42:45,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:45,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:42:45,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421802877] [2020-10-27 20:42:45,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:42:45,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:45,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:42:45,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:45,852 INFO L87 Difference]: Start difference. First operand 666 states and 856 transitions. Second operand 12 states. [2020-10-27 20:42:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:47,941 INFO L93 Difference]: Finished difference Result 712 states and 910 transitions. [2020-10-27 20:42:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:42:47,941 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-27 20:42:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:47,946 INFO L225 Difference]: With dead ends: 712 [2020-10-27 20:42:47,946 INFO L226 Difference]: Without dead ends: 683 [2020-10-27 20:42:47,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:42:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-27 20:42:48,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 658. [2020-10-27 20:42:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-27 20:42:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 844 transitions. [2020-10-27 20:42:48,033 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 844 transitions. Word has length 56 [2020-10-27 20:42:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:48,033 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 844 transitions. [2020-10-27 20:42:48,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:42:48,033 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 844 transitions. [2020-10-27 20:42:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:42:48,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:48,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:48,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 20:42:48,035 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:48,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1915715928, now seen corresponding path program 1 times [2020-10-27 20:42:48,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:48,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786150243] [2020-10-27 20:42:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:48,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:48,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 20:42:48,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 20:42:48,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 20:42:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:42:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:48,291 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:48,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:48,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:48,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:48,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:48,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:42:48,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:48,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:48,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:48,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:48,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:42:48,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 20:42:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:42:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:42:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:48,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:48,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 20:42:48,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:42:48,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:48,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:42:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:48,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786150243] [2020-10-27 20:42:48,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:48,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:42:48,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199849096] [2020-10-27 20:42:48,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:42:48,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:42:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:42:48,487 INFO L87 Difference]: Start difference. First operand 658 states and 844 transitions. Second operand 8 states. [2020-10-27 20:42:48,630 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:42:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:50,013 INFO L93 Difference]: Finished difference Result 865 states and 1108 transitions. [2020-10-27 20:42:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:42:50,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-27 20:42:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:50,019 INFO L225 Difference]: With dead ends: 865 [2020-10-27 20:42:50,020 INFO L226 Difference]: Without dead ends: 833 [2020-10-27 20:42:50,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:42:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-27 20:42:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 742. [2020-10-27 20:42:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-10-27 20:42:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 953 transitions. [2020-10-27 20:42:50,123 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 953 transitions. Word has length 55 [2020-10-27 20:42:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:50,123 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 953 transitions. [2020-10-27 20:42:50,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:42:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 953 transitions. [2020-10-27 20:42:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:42:50,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:50,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:50,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 20:42:50,126 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash -2062408730, now seen corresponding path program 1 times [2020-10-27 20:42:50,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:50,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532883263] [2020-10-27 20:42:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:50,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:50,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 20:42:50,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:50,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 20:42:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:42:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 20:42:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:50,512 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:50,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:50,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:50,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:50,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:42:50,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:50,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:50,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:42:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:50,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:50,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:50,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:50,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:50,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:50,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:50,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:50,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:50,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:42:50,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 20:42:50,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 20:42:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:42:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:42:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 20:42:50,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 20:42:50,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:42:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:42:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:42:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:50,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532883263] [2020-10-27 20:42:50,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:50,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:42:50,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029101133] [2020-10-27 20:42:50,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:42:50,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:50,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:42:50,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:42:50,867 INFO L87 Difference]: Start difference. First operand 742 states and 953 transitions. Second operand 12 states. [2020-10-27 20:42:51,060 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 20:42:51,274 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 20:42:51,783 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 20:42:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:54,105 INFO L93 Difference]: Finished difference Result 801 states and 1025 transitions. [2020-10-27 20:42:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:42:54,106 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-27 20:42:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:54,110 INFO L225 Difference]: With dead ends: 801 [2020-10-27 20:42:54,110 INFO L226 Difference]: Without dead ends: 694 [2020-10-27 20:42:54,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:42:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-27 20:42:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 663. [2020-10-27 20:42:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-27 20:42:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 846 transitions. [2020-10-27 20:42:54,200 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 846 transitions. Word has length 55 [2020-10-27 20:42:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:54,200 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 846 transitions. [2020-10-27 20:42:54,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:42:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 846 transitions. [2020-10-27 20:42:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:42:54,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:54,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:54,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 20:42:54,202 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:54,202 INFO L82 PathProgramCache]: Analyzing trace with hash 893605885, now seen corresponding path program 1 times [2020-10-27 20:42:54,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:54,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079869200] [2020-10-27 20:42:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:54,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 20:42:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:42:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-10-27 20:42:55,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:42:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 20:42:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:42:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:56,095 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:56,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:56,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:56,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:56,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:56,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:56,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:56,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:56,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:56,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 20:42:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:56,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:56,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:56,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:42:56,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:56,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:56,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:42:56,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 20:42:56,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:42:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 20:42:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:42:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:56,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:56,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:42:56,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:42:56,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:42:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:42:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:56,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079869200] [2020-10-27 20:42:56,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:56,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 20:42:56,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905650126] [2020-10-27 20:42:56,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:42:56,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:56,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:42:56,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:42:56,426 INFO L87 Difference]: Start difference. First operand 663 states and 846 transitions. Second operand 13 states. [2020-10-27 20:42:57,232 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 20:42:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:42:58,869 INFO L93 Difference]: Finished difference Result 751 states and 960 transitions. [2020-10-27 20:42:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:42:58,870 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-27 20:42:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:42:58,876 INFO L225 Difference]: With dead ends: 751 [2020-10-27 20:42:58,876 INFO L226 Difference]: Without dead ends: 725 [2020-10-27 20:42:58,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:42:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-27 20:42:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 663. [2020-10-27 20:42:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-27 20:42:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 846 transitions. [2020-10-27 20:42:58,964 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 846 transitions. Word has length 55 [2020-10-27 20:42:58,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:42:58,964 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 846 transitions. [2020-10-27 20:42:58,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:42:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 846 transitions. [2020-10-27 20:42:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:42:58,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:42:58,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:42:58,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 20:42:58,967 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:42:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:42:58,967 INFO L82 PathProgramCache]: Analyzing trace with hash 498659261, now seen corresponding path program 1 times [2020-10-27 20:42:58,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:42:58,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606940397] [2020-10-27 20:42:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:42:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:59,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 20:42:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:42:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 20:42:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:42:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 20:42:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:59,501 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:42:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:42:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:59,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:59,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:42:59,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:42:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:42:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:42:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:59,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:59,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:59,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:59,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:42:59,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:42:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:59,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:42:59,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:42:59,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:42:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:42:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:59,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 20:42:59,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 20:42:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:42:59,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 20:42:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:42:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:42:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:42:59,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:42:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:42:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:42:59,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606940397] [2020-10-27 20:42:59,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:42:59,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:42:59,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284790427] [2020-10-27 20:42:59,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:42:59,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:42:59,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:42:59,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:42:59,748 INFO L87 Difference]: Start difference. First operand 663 states and 846 transitions. Second operand 11 states. [2020-10-27 20:42:59,925 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:43:00,115 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:43:01,443 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2020-10-27 20:43:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:02,467 INFO L93 Difference]: Finished difference Result 831 states and 1080 transitions. [2020-10-27 20:43:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:43:02,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-27 20:43:02,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:02,476 INFO L225 Difference]: With dead ends: 831 [2020-10-27 20:43:02,476 INFO L226 Difference]: Without dead ends: 814 [2020-10-27 20:43:02,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 20:43:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-10-27 20:43:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 678. [2020-10-27 20:43:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-10-27 20:43:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 875 transitions. [2020-10-27 20:43:02,576 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 875 transitions. Word has length 55 [2020-10-27 20:43:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:02,576 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 875 transitions. [2020-10-27 20:43:02,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:43:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 875 transitions. [2020-10-27 20:43:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 20:43:02,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:02,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:02,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 20:43:02,578 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:02,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1915396886, now seen corresponding path program 1 times [2020-10-27 20:43:02,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:02,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555551644] [2020-10-27 20:43:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:02,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 20:43:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 20:43:02,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 20:43:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:03,009 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:03,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:03,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:03,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:03,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:03,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:03,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:03,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:03,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:43:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:03,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:03,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 20:43:03,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 20:43:03,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:43:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:03,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:03,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:03,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:43:03,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:43:03,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:43:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:03,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:03,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:03,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:03,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555551644] [2020-10-27 20:43:03,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:03,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 20:43:03,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054461178] [2020-10-27 20:43:03,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:43:03,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:43:03,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:43:03,317 INFO L87 Difference]: Start difference. First operand 678 states and 875 transitions. Second operand 10 states. [2020-10-27 20:43:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:05,060 INFO L93 Difference]: Finished difference Result 989 states and 1287 transitions. [2020-10-27 20:43:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:43:05,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-27 20:43:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:05,065 INFO L225 Difference]: With dead ends: 989 [2020-10-27 20:43:05,065 INFO L226 Difference]: Without dead ends: 640 [2020-10-27 20:43:05,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:43:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-27 20:43:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 594. [2020-10-27 20:43:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-27 20:43:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 743 transitions. [2020-10-27 20:43:05,158 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 743 transitions. Word has length 62 [2020-10-27 20:43:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:05,159 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 743 transitions. [2020-10-27 20:43:05,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:43:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 743 transitions. [2020-10-27 20:43:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 20:43:05,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:05,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:05,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 20:43:05,161 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash 30013090, now seen corresponding path program 1 times [2020-10-27 20:43:05,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:05,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243220068] [2020-10-27 20:43:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 20:43:05,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 20:43:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:43:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 20:43:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:05,571 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:43:05,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:05,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:05,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:05,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:43:05,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:43:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:05,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:05,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:05,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:05,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:05,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:43:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 20:43:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:05,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:05,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 20:43:05,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:05,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:43:05,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:05,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243220068] [2020-10-27 20:43:05,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:05,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:43:05,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092085657] [2020-10-27 20:43:05,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:43:05,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:05,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:43:05,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:43:05,818 INFO L87 Difference]: Start difference. First operand 594 states and 743 transitions. Second operand 11 states. [2020-10-27 20:43:05,987 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:43:06,197 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:43:07,626 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 20:43:08,166 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 20:43:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:08,681 INFO L93 Difference]: Finished difference Result 636 states and 787 transitions. [2020-10-27 20:43:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:43:08,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 20:43:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:08,686 INFO L225 Difference]: With dead ends: 636 [2020-10-27 20:43:08,686 INFO L226 Difference]: Without dead ends: 617 [2020-10-27 20:43:08,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:43:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-27 20:43:08,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 573. [2020-10-27 20:43:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-10-27 20:43:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 712 transitions. [2020-10-27 20:43:08,774 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 712 transitions. Word has length 57 [2020-10-27 20:43:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:08,774 INFO L481 AbstractCegarLoop]: Abstraction has 573 states and 712 transitions. [2020-10-27 20:43:08,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:43:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 712 transitions. [2020-10-27 20:43:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 20:43:08,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:08,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:08,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 20:43:08,776 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1738544669, now seen corresponding path program 1 times [2020-10-27 20:43:08,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:08,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826768294] [2020-10-27 20:43:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:08,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 20:43:08,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,088 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:09,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:43:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:09,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:43:09,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:43:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:09,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:09,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:09,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:09,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:43:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:09,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:09,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:09,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:43:09,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 20:43:09,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 20:43:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:43:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:09,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:09,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:43:09,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:09,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:09,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:09,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:09,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:09,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:09,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:09,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:09,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:43:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:09,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826768294] [2020-10-27 20:43:09,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:09,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 20:43:09,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931622774] [2020-10-27 20:43:09,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:43:09,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:09,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:43:09,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:43:09,370 INFO L87 Difference]: Start difference. First operand 573 states and 712 transitions. Second operand 13 states. [2020-10-27 20:43:09,551 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 20:43:09,751 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 20:43:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:11,850 INFO L93 Difference]: Finished difference Result 860 states and 1079 transitions. [2020-10-27 20:43:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:43:11,850 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 20:43:11,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:11,854 INFO L225 Difference]: With dead ends: 860 [2020-10-27 20:43:11,855 INFO L226 Difference]: Without dead ends: 589 [2020-10-27 20:43:11,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:43:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-10-27 20:43:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 568. [2020-10-27 20:43:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-27 20:43:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 702 transitions. [2020-10-27 20:43:11,950 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 702 transitions. Word has length 66 [2020-10-27 20:43:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:11,951 INFO L481 AbstractCegarLoop]: Abstraction has 568 states and 702 transitions. [2020-10-27 20:43:11,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:43:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 702 transitions. [2020-10-27 20:43:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 20:43:11,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:11,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:11,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 20:43:11,953 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:11,954 INFO L82 PathProgramCache]: Analyzing trace with hash 559247864, now seen corresponding path program 1 times [2020-10-27 20:43:11,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:11,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658586775] [2020-10-27 20:43:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:11,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:12,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 20:43:12,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-27 20:43:12,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 20:43:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:12,666 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:12,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:12,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:12,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:12,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:12,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:12,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:12,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:12,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:12,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:12,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:12,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:12,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:12,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:12,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:12,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:12,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 20:43:12,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 20:43:12,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:43:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:43:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:12,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:43:12,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:43:12,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:43:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:43:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:12,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658586775] [2020-10-27 20:43:12,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:12,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:43:12,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513934057] [2020-10-27 20:43:12,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:43:12,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:12,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:43:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:43:12,990 INFO L87 Difference]: Start difference. First operand 568 states and 702 transitions. Second operand 11 states. [2020-10-27 20:43:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:15,418 INFO L93 Difference]: Finished difference Result 604 states and 743 transitions. [2020-10-27 20:43:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:43:15,419 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-27 20:43:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:15,422 INFO L225 Difference]: With dead ends: 604 [2020-10-27 20:43:15,423 INFO L226 Difference]: Without dead ends: 578 [2020-10-27 20:43:15,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:43:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-27 20:43:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 547. [2020-10-27 20:43:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-27 20:43:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 677 transitions. [2020-10-27 20:43:15,508 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 677 transitions. Word has length 60 [2020-10-27 20:43:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:15,509 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 677 transitions. [2020-10-27 20:43:15,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:43:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 677 transitions. [2020-10-27 20:43:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 20:43:15,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:15,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:15,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 20:43:15,511 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:15,511 INFO L82 PathProgramCache]: Analyzing trace with hash 964343333, now seen corresponding path program 1 times [2020-10-27 20:43:15,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:15,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664717224] [2020-10-27 20:43:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1279 [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:43:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:16,984 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:16,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:16,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:16,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:16,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:43:16,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:16,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:17,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:17,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:17,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:17,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:17,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:17,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:17,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:17,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:17,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:17,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:43:17,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 20:43:17,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:43:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:43:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:17,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:17,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:17,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:43:17,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:17,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664717224] [2020-10-27 20:43:17,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:17,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:17,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357977904] [2020-10-27 20:43:17,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:17,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:17,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:17,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:17,306 INFO L87 Difference]: Start difference. First operand 547 states and 677 transitions. Second operand 14 states. [2020-10-27 20:43:19,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:19,250 INFO L93 Difference]: Finished difference Result 598 states and 734 transitions. [2020-10-27 20:43:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:43:19,251 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-27 20:43:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:19,254 INFO L225 Difference]: With dead ends: 598 [2020-10-27 20:43:19,254 INFO L226 Difference]: Without dead ends: 563 [2020-10-27 20:43:19,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:43:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-27 20:43:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 542. [2020-10-27 20:43:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-27 20:43:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 669 transitions. [2020-10-27 20:43:19,331 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 669 transitions. Word has length 59 [2020-10-27 20:43:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:19,331 INFO L481 AbstractCegarLoop]: Abstraction has 542 states and 669 transitions. [2020-10-27 20:43:19,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 669 transitions. [2020-10-27 20:43:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 20:43:19,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:19,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:19,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 20:43:19,333 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash -544202504, now seen corresponding path program 1 times [2020-10-27 20:43:19,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:19,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515771109] [2020-10-27 20:43:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:20,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:20,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 20:43:20,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-10-27 20:43:20,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 20:43:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:43:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:20,758 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:20,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:20,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:20,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:20,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:20,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:20,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:20,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:20,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 20:43:20,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:20,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 20:43:20,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:43:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:20,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 20:43:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:21,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:21,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:21,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:21,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:21,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515771109] [2020-10-27 20:43:21,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:21,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:21,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285110859] [2020-10-27 20:43:21,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:21,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:21,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:21,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:21,047 INFO L87 Difference]: Start difference. First operand 542 states and 669 transitions. Second operand 14 states. [2020-10-27 20:43:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:23,512 INFO L93 Difference]: Finished difference Result 593 states and 726 transitions. [2020-10-27 20:43:23,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:43:23,513 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-27 20:43:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:23,516 INFO L225 Difference]: With dead ends: 593 [2020-10-27 20:43:23,516 INFO L226 Difference]: Without dead ends: 557 [2020-10-27 20:43:23,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:43:23,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-27 20:43:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 536. [2020-10-27 20:43:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-27 20:43:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 660 transitions. [2020-10-27 20:43:23,599 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 660 transitions. Word has length 60 [2020-10-27 20:43:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:23,599 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 660 transitions. [2020-10-27 20:43:23,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 660 transitions. [2020-10-27 20:43:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 20:43:23,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:23,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:23,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 20:43:23,601 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:23,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1519776346, now seen corresponding path program 1 times [2020-10-27 20:43:23,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:23,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616834982] [2020-10-27 20:43:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:23,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:24,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:43:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,011 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:25,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:25,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:25,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:25,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:25,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:25,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:25,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:25,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 20:43:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:25,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:25,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:25,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:43:25,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:25,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:25,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616834982] [2020-10-27 20:43:25,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:25,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:25,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502035300] [2020-10-27 20:43:25,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:25,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:25,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:25,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:25,304 INFO L87 Difference]: Start difference. First operand 536 states and 660 transitions. Second operand 14 states. [2020-10-27 20:43:27,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:27,737 INFO L93 Difference]: Finished difference Result 587 states and 717 transitions. [2020-10-27 20:43:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:43:27,738 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-27 20:43:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:27,741 INFO L225 Difference]: With dead ends: 587 [2020-10-27 20:43:27,741 INFO L226 Difference]: Without dead ends: 552 [2020-10-27 20:43:27,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:43:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-27 20:43:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 531. [2020-10-27 20:43:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-27 20:43:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 652 transitions. [2020-10-27 20:43:27,812 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 652 transitions. Word has length 60 [2020-10-27 20:43:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:27,813 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 652 transitions. [2020-10-27 20:43:27,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 652 transitions. [2020-10-27 20:43:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 20:43:27,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:27,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:27,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 20:43:27,815 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2118175763, now seen corresponding path program 1 times [2020-10-27 20:43:27,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:27,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554878241] [2020-10-27 20:43:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 20:43:28,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 20:43:28,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:43:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 20:43:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,272 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:28,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:28,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:28,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:28,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:28,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:28,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:43:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:43:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 20:43:28,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 20:43:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:43:28,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:28,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:28,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:28,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:28,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:28,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:28,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:28,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:28,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:28,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:28,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:28,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554878241] [2020-10-27 20:43:28,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:28,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:43:28,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618902188] [2020-10-27 20:43:28,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:43:28,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:28,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:43:28,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:43:28,531 INFO L87 Difference]: Start difference. First operand 531 states and 652 transitions. Second operand 12 states. [2020-10-27 20:43:29,277 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:43:30,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:30,996 INFO L93 Difference]: Finished difference Result 808 states and 996 transitions. [2020-10-27 20:43:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:43:30,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-27 20:43:30,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:31,000 INFO L225 Difference]: With dead ends: 808 [2020-10-27 20:43:31,000 INFO L226 Difference]: Without dead ends: 577 [2020-10-27 20:43:31,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:43:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-27 20:43:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 531. [2020-10-27 20:43:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-27 20:43:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 650 transitions. [2020-10-27 20:43:31,070 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 650 transitions. Word has length 69 [2020-10-27 20:43:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:31,071 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 650 transitions. [2020-10-27 20:43:31,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:43:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 650 transitions. [2020-10-27 20:43:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 20:43:31,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:31,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:31,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 20:43:31,073 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:31,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1592861899, now seen corresponding path program 1 times [2020-10-27 20:43:31,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:31,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717107585] [2020-10-27 20:43:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 20:43:31,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 20:43:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 20:43:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 20:43:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,507 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:31,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:31,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:31,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:31,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:31,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:31,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 20:43:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:43:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:43:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:43:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:43:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:31,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:31,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:43:31,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:31,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:31,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:31,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:31,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717107585] [2020-10-27 20:43:31,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:31,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:43:31,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307647089] [2020-10-27 20:43:31,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:43:31,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:31,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:43:31,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:43:31,744 INFO L87 Difference]: Start difference. First operand 531 states and 650 transitions. Second operand 9 states. [2020-10-27 20:43:32,484 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:43:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:33,646 INFO L93 Difference]: Finished difference Result 951 states and 1169 transitions. [2020-10-27 20:43:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:43:33,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 20:43:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:33,652 INFO L225 Difference]: With dead ends: 951 [2020-10-27 20:43:33,652 INFO L226 Difference]: Without dead ends: 691 [2020-10-27 20:43:33,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:43:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-27 20:43:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 646. [2020-10-27 20:43:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-27 20:43:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 790 transitions. [2020-10-27 20:43:33,744 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 790 transitions. Word has length 68 [2020-10-27 20:43:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:33,744 INFO L481 AbstractCegarLoop]: Abstraction has 646 states and 790 transitions. [2020-10-27 20:43:33,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:43:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 790 transitions. [2020-10-27 20:43:33,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 20:43:33,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:33,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:33,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 20:43:33,746 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:33,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:33,747 INFO L82 PathProgramCache]: Analyzing trace with hash -205977427, now seen corresponding path program 1 times [2020-10-27 20:43:33,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:33,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426287042] [2020-10-27 20:43:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:33,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:43:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,518 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:34,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:34,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:43:34,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:34,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:34,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:34,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:34,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:34,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 20:43:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 20:43:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:34,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:34,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:34,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:34,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:34,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:34,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426287042] [2020-10-27 20:43:34,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:34,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:34,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533318861] [2020-10-27 20:43:34,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:34,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:34,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:34,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:34,834 INFO L87 Difference]: Start difference. First operand 646 states and 790 transitions. Second operand 14 states. [2020-10-27 20:43:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:36,747 INFO L93 Difference]: Finished difference Result 697 states and 847 transitions. [2020-10-27 20:43:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:43:36,748 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-27 20:43:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:36,751 INFO L225 Difference]: With dead ends: 697 [2020-10-27 20:43:36,751 INFO L226 Difference]: Without dead ends: 621 [2020-10-27 20:43:36,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:43:36,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-27 20:43:36,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 600. [2020-10-27 20:43:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-27 20:43:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 733 transitions. [2020-10-27 20:43:36,841 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 733 transitions. Word has length 64 [2020-10-27 20:43:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:36,841 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 733 transitions. [2020-10-27 20:43:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 733 transitions. [2020-10-27 20:43:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 20:43:36,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:36,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:36,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 20:43:36,843 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:36,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1972076870, now seen corresponding path program 1 times [2020-10-27 20:43:36,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:36,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286881965] [2020-10-27 20:43:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 20:43:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:43:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,315 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:37,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:37,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:37,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:37,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:37,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:37,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:43:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:43:37,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:43:37,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:37,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:37,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:37,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 20:43:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:43:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:37,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286881965] [2020-10-27 20:43:37,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:37,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 20:43:37,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672149552] [2020-10-27 20:43:37,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:43:37,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:37,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:43:37,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:43:37,537 INFO L87 Difference]: Start difference. First operand 600 states and 733 transitions. Second operand 11 states. [2020-10-27 20:43:37,705 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:43:38,232 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:43:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:40,055 INFO L93 Difference]: Finished difference Result 933 states and 1140 transitions. [2020-10-27 20:43:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 20:43:40,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-27 20:43:40,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:40,059 INFO L225 Difference]: With dead ends: 933 [2020-10-27 20:43:40,059 INFO L226 Difference]: Without dead ends: 615 [2020-10-27 20:43:40,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:43:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-27 20:43:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 581. [2020-10-27 20:43:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-27 20:43:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 699 transitions. [2020-10-27 20:43:40,130 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 699 transitions. Word has length 80 [2020-10-27 20:43:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:40,130 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 699 transitions. [2020-10-27 20:43:40,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:43:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 699 transitions. [2020-10-27 20:43:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 20:43:40,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:40,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:40,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 20:43:40,132 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:40,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1658071951, now seen corresponding path program 1 times [2020-10-27 20:43:40,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:40,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938415495] [2020-10-27 20:43:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,641 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:40,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:40,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:40,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 20:43:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:43:40,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 20:43:40,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 20:43:40,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:43:40,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:40,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:40,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 20:43:40,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:40,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 20:43:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 20:43:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 20:43:40,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:43:40,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:43:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:40,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:40,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:40,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938415495] [2020-10-27 20:43:40,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:40,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:40,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773216104] [2020-10-27 20:43:40,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:40,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:40,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:40,937 INFO L87 Difference]: Start difference. First operand 581 states and 699 transitions. Second operand 14 states. [2020-10-27 20:43:42,184 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:43:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:43,008 INFO L93 Difference]: Finished difference Result 958 states and 1186 transitions. [2020-10-27 20:43:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 20:43:43,009 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-10-27 20:43:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:43,012 INFO L225 Difference]: With dead ends: 958 [2020-10-27 20:43:43,013 INFO L226 Difference]: Without dead ends: 703 [2020-10-27 20:43:43,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-27 20:43:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-27 20:43:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 545. [2020-10-27 20:43:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-10-27 20:43:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 653 transitions. [2020-10-27 20:43:43,091 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 653 transitions. Word has length 81 [2020-10-27 20:43:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:43,091 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 653 transitions. [2020-10-27 20:43:43,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 653 transitions. [2020-10-27 20:43:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 20:43:43,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:43,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:43,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 20:43:43,094 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:43,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1168814878, now seen corresponding path program 1 times [2020-10-27 20:43:43,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:43,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895147031] [2020-10-27 20:43:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:43,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 20:43:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:43:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,264 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:48,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:48,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 20:43:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 20:43:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:43:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 20:43:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:43:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:43:48,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 20:43:48,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:43:48,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:43:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:48,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:43:48,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:43:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:43:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:48,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895147031] [2020-10-27 20:43:48,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:48,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 20:43:48,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304670139] [2020-10-27 20:43:48,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 20:43:48,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 20:43:48,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:43:48,784 INFO L87 Difference]: Start difference. First operand 545 states and 653 transitions. Second operand 16 states. [2020-10-27 20:43:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:51,314 INFO L93 Difference]: Finished difference Result 577 states and 691 transitions. [2020-10-27 20:43:51,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:43:51,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-27 20:43:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:51,318 INFO L225 Difference]: With dead ends: 577 [2020-10-27 20:43:51,319 INFO L226 Difference]: Without dead ends: 495 [2020-10-27 20:43:51,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:43:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-27 20:43:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 476. [2020-10-27 20:43:51,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-27 20:43:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 567 transitions. [2020-10-27 20:43:51,407 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 567 transitions. Word has length 79 [2020-10-27 20:43:51,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:51,407 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 567 transitions. [2020-10-27 20:43:51,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 20:43:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 567 transitions. [2020-10-27 20:43:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 20:43:51,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:51,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:51,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 20:43:51,410 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:51,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1091828036, now seen corresponding path program 1 times [2020-10-27 20:43:51,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:51,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87770164] [2020-10-27 20:43:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:43:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 20:43:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,426 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:52,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:52,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:52,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:43:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:43:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 20:43:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:43:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:43:52,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:43:52,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:43:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:43:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:43:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:43:52,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:52,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87770164] [2020-10-27 20:43:52,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:52,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:43:52,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191565032] [2020-10-27 20:43:52,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:43:52,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:52,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:43:52,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:43:52,756 INFO L87 Difference]: Start difference. First operand 476 states and 567 transitions. Second operand 12 states. [2020-10-27 20:43:52,923 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 20:43:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:55,046 INFO L93 Difference]: Finished difference Result 723 states and 839 transitions. [2020-10-27 20:43:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:43:55,047 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-27 20:43:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:55,049 INFO L225 Difference]: With dead ends: 723 [2020-10-27 20:43:55,049 INFO L226 Difference]: Without dead ends: 629 [2020-10-27 20:43:55,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:43:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-10-27 20:43:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 597. [2020-10-27 20:43:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-27 20:43:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 701 transitions. [2020-10-27 20:43:55,123 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 701 transitions. Word has length 80 [2020-10-27 20:43:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:55,123 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 701 transitions. [2020-10-27 20:43:55,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:43:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 701 transitions. [2020-10-27 20:43:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 20:43:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:55,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:55,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 20:43:55,124 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:55,125 INFO L82 PathProgramCache]: Analyzing trace with hash 875416165, now seen corresponding path program 1 times [2020-10-27 20:43:55,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:55,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60278352] [2020-10-27 20:43:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:55,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:55,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 20:43:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-27 20:43:55,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:43:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 20:43:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 20:43:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:55,835 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:55,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:55,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:55,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:55,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:55,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:55,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:55,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:55,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:55,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:55,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:55,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:55,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:55,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:55,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:55,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:56,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:56,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 20:43:56,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:43:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 20:43:56,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:43:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 20:43:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:56,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 20:43:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:43:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:56,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:56,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 20:43:56,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:43:56,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:43:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:56,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:56,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:56,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:56,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:56,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:56,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:43:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:56,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:56,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:56,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 20:43:56,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 20:43:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:56,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:56,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:43:56,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:43:56,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:43:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:56,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60278352] [2020-10-27 20:43:56,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:56,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 20:43:56,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028523367] [2020-10-27 20:43:56,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:43:56,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:56,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:43:56,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:43:56,538 INFO L87 Difference]: Start difference. First operand 597 states and 701 transitions. Second operand 14 states. [2020-10-27 20:43:58,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:43:58,073 INFO L93 Difference]: Finished difference Result 622 states and 727 transitions. [2020-10-27 20:43:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:43:58,074 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-27 20:43:58,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:43:58,076 INFO L225 Difference]: With dead ends: 622 [2020-10-27 20:43:58,076 INFO L226 Difference]: Without dead ends: 600 [2020-10-27 20:43:58,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:43:58,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-10-27 20:43:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 597. [2020-10-27 20:43:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-27 20:43:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 700 transitions. [2020-10-27 20:43:58,154 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 700 transitions. Word has length 86 [2020-10-27 20:43:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:43:58,155 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 700 transitions. [2020-10-27 20:43:58,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:43:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 700 transitions. [2020-10-27 20:43:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 20:43:58,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:43:58,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:43:58,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 20:43:58,156 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:43:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:43:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash -65266915, now seen corresponding path program 1 times [2020-10-27 20:43:58,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:43:58,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573681749] [2020-10-27 20:43:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:43:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 20:43:58,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:43:58,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 20:43:58,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:43:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 20:43:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,517 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:43:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:43:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:43:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:58,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:58,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:43:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:43:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:43:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 20:43:58,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 20:43:58,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:43:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 20:43:58,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:43:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:43:58,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:58,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:43:58,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:43:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:58,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:43:58,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:43:58,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:58,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:43:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 20:43:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:43:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:43:58,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:43:58,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:43:58,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:43:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:43:58,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:43:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:43:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:43:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:43:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:43:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:43:58,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573681749] [2020-10-27 20:43:58,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:43:58,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 20:43:58,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078267948] [2020-10-27 20:43:58,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:43:58,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:43:58,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:43:58,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:43:58,821 INFO L87 Difference]: Start difference. First operand 597 states and 700 transitions. Second operand 12 states. [2020-10-27 20:43:58,998 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 20:43:59,190 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:44:00,806 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 113 [2020-10-27 20:44:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:44:01,200 INFO L93 Difference]: Finished difference Result 612 states and 713 transitions. [2020-10-27 20:44:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:44:01,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-27 20:44:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:44:01,204 INFO L225 Difference]: With dead ends: 612 [2020-10-27 20:44:01,204 INFO L226 Difference]: Without dead ends: 606 [2020-10-27 20:44:01,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:44:01,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-27 20:44:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 597. [2020-10-27 20:44:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-27 20:44:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 699 transitions. [2020-10-27 20:44:01,271 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 699 transitions. Word has length 81 [2020-10-27 20:44:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:44:01,271 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 699 transitions. [2020-10-27 20:44:01,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:44:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 699 transitions. [2020-10-27 20:44:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 20:44:01,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:44:01,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:44:01,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 20:44:01,273 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:44:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:44:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1626707656, now seen corresponding path program 1 times [2020-10-27 20:44:01,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:44:01,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327522617] [2020-10-27 20:44:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:44:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 20:44:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,554 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 20:44:01,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:44:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:01,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:44:01,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:44:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:44:01,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:44:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:44:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:44:01,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:44:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:44:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:44:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 20:44:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 20:44:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:44:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 20:44:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:44:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:44:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 20:44:01,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:44:01,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 20:44:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:44:01,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:44:01,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:44:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:44:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:44:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 20:44:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:44:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:44:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:44:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:44:01,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327522617] [2020-10-27 20:44:01,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:44:01,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 20:44:01,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8682884] [2020-10-27 20:44:01,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:44:01,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:44:01,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:44:01,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:44:01,932 INFO L87 Difference]: Start difference. First operand 597 states and 699 transitions. Second operand 15 states. [2020-10-27 20:44:02,289 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-27 20:44:02,498 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 20:44:02,843 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 20:44:03,776 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 20:44:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:44:05,700 INFO L93 Difference]: Finished difference Result 607 states and 708 transitions. [2020-10-27 20:44:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 20:44:05,701 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2020-10-27 20:44:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:44:05,704 INFO L225 Difference]: With dead ends: 607 [2020-10-27 20:44:05,704 INFO L226 Difference]: Without dead ends: 583 [2020-10-27 20:44:05,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 20:44:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-10-27 20:44:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 579. [2020-10-27 20:44:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-27 20:44:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 679 transitions. [2020-10-27 20:44:05,797 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 679 transitions. Word has length 82 [2020-10-27 20:44:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:44:05,797 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 679 transitions. [2020-10-27 20:44:05,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:44:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 679 transitions. [2020-10-27 20:44:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 20:44:05,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:44:05,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:44:05,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 20:44:05,799 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:44:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:44:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash -388788350, now seen corresponding path program 1 times [2020-10-27 20:44:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:44:05,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909546133] [2020-10-27 20:44:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:44:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 20:44:05,822 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 20:44:05,822 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:44:05,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 20:44:05,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:44:05 BoogieIcfgContainer [2020-10-27 20:44:05,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:44:05,861 INFO L168 Benchmark]: Toolchain (without parser) took 145573.00 ms. Allocated memory was 151.0 MB in the beginning and 659.6 MB in the end (delta: 508.6 MB). Free memory was 125.5 MB in the beginning and 348.4 MB in the end (delta: -223.0 MB). Peak memory consumption was 286.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:44:05,862 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:44:05,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:44:05,862 INFO L168 Benchmark]: Boogie Preprocessor took 193.32 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 133.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2020-10-27 20:44:05,863 INFO L168 Benchmark]: RCFGBuilder took 1356.00 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 129.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:44:05,863 INFO L168 Benchmark]: TraceAbstraction took 143374.56 ms. Allocated memory was 151.0 MB in the beginning and 659.6 MB in the end (delta: 508.6 MB). Free memory was 129.2 MB in the beginning and 348.4 MB in the end (delta: -219.2 MB). Peak memory consumption was 289.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:44:05,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 631.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 193.32 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 133.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1356.00 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 129.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 143374.56 ms. Allocated memory was 151.0 MB in the beginning and 659.6 MB in the end (delta: 508.6 MB). Free memory was 129.2 MB in the beginning and 348.4 MB in the end (delta: -219.2 MB). Peak memory consumption was 289.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int FloppyThread ; [L37] int KernelMode ; [L38] int Suspended ; [L39] int Executive ; [L40] int DiskController ; [L41] int FloppyDiskPeripheral ; [L42] int FlConfigCallBack ; [L43] int MaximumInterfaceType ; [L44] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L45] int myStatus ; [L46] int s ; [L47] int UNLOADED ; [L48] int NP ; [L49] int DC ; [L50] int SKIP1 ; [L51] int SKIP2 ; [L52] int MPR1 ; [L53] int MPR3 ; [L54] int IPC ; [L55] int pended ; [L56] int compRegistered ; [L57] int lowerDriverReturn ; [L58] int setEventCalled ; [L59] int customIrp ; [L91] int PagingReferenceCount = 0; [L92] int PagingMutex = 0; [L671] int status ; [L672] int irp = __VERIFIER_nondet_int() ; [L673] int pirp ; [L674] int pirp__IoStatus__Status ; [L675] int irp_choice = __VERIFIER_nondet_int() ; [L676] int devobj = __VERIFIER_nondet_int() ; [L677] int __cil_tmp8 ; [L679] FloppyThread = 0 [L680] KernelMode = 0 [L681] Suspended = 0 [L682] Executive = 0 [L683] DiskController = 0 [L684] FloppyDiskPeripheral = 0 [L685] FlConfigCallBack = 0 [L686] MaximumInterfaceType = 0 [L687] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L688] myStatus = 0 [L689] s = 0 [L690] UNLOADED = 0 [L691] NP = 0 [L692] DC = 0 [L693] SKIP1 = 0 [L694] SKIP2 = 0 [L695] MPR1 = 0 [L696] MPR3 = 0 [L697] IPC = 0 [L698] pended = 0 [L699] compRegistered = 0 [L700] lowerDriverReturn = 0 [L701] setEventCalled = 0 [L702] customIrp = 0 [L706] status = 0 [L707] pirp = irp [L708] CALL _BLAST_init() [L74] UNLOADED = 0 [L75] NP = 1 [L76] DC = 2 [L77] SKIP1 = 3 [L78] SKIP2 = 4 [L79] MPR1 = 5 [L80] MPR3 = 6 [L81] IPC = 7 [L82] s = UNLOADED [L83] pended = 0 [L84] compRegistered = 0 [L85] lowerDriverReturn = 0 [L86] setEventCalled = 0 [L87] customIrp = 0 [L708] RET _BLAST_init() [L710] COND TRUE status >= 0 [L711] s = NP [L712] customIrp = 0 [L713] setEventCalled = customIrp [L714] lowerDriverReturn = setEventCalled [L715] compRegistered = lowerDriverReturn [L716] pended = compRegistered [L717] pirp__IoStatus__Status = 0 [L718] myStatus = 0 [L719] COND TRUE irp_choice == 0 [L720] pirp__IoStatus__Status = -1073741637 [L721] myStatus = -1073741637 [L724] CALL stub_driver_init() [L661] s = NP [L662] pended = 0 [L663] compRegistered = 0 [L664] lowerDriverReturn = 0 [L665] setEventCalled = 0 [L666] customIrp = 0 [L724] RET stub_driver_init() [L727] COND FALSE !(status < 0) [L731] int tmp_ndt_1; [L732] tmp_ndt_1 = __VERIFIER_nondet_int() [L733] COND TRUE tmp_ndt_1 == 3 [L740] CALL, EXPR FloppyPnp(devobj, pirp) [L164] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L165] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L166] int Irp__IoStatus__Information ; [L167] int Irp__IoStatus__Status ; [L168] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L169] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L170] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L171] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L172] int disketteExtension__HoldNewRequests ; [L173] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L174] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L175] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L176] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L177] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L178] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L179] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L180] int irpSp ; [L181] int disketteExtension ; [L182] int ntStatus ; [L183] int doneEvent = __VERIFIER_nondet_int() ; [L184] int irpSp___0 ; [L185] int nextIrpSp ; [L186] int nextIrpSp__Control ; [L187] int irpSp___1 ; [L188] int irpSp__Context ; [L189] int irpSp__Control ; [L190] long __cil_tmp29 ; [L191] long __cil_tmp30 ; [L194] ntStatus = 0 [L195] PagingReferenceCount ++ [L196] COND TRUE PagingReferenceCount == 1 [L199] disketteExtension = DeviceObject__DeviceExtension [L200] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L201] COND FALSE !(\read(disketteExtension__IsRemoved)) [L210] COND FALSE !(irpSp__MinorFunction == 0) [L213] COND TRUE irpSp__MinorFunction == 5 [L239] COND TRUE irpSp__MinorFunction == 5 [L242] COND FALSE !(! disketteExtension__IsStarted) [L258] disketteExtension__HoldNewRequests = 1 [L259] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L101] int status ; [L102] int threadHandle = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L104] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L105] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L106] int Irp__IoStatus__Status ; [L107] int Irp__IoStatus__Information ; [L108] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L109] int ObjAttributes = __VERIFIER_nondet_int() ; [L110] int __cil_tmp12 ; [L111] int __cil_tmp13 ; [L114] COND FALSE !(DisketteExtension__PoweringDown == 1) [L120] DisketteExtension__ThreadReferenceCount ++ [L121] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L153] COND TRUE pended == 0 [L154] pended = 1 [L160] return (259); [L259] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L259] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L262] __cil_tmp29 = (long )ntStatus [L263] COND TRUE __cil_tmp29 == 259L [L265-L266] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1036] COND FALSE !(s == MPR3) [L1045] COND FALSE !(customIrp == 1) [L1049] COND FALSE !(s == MPR3) [L1056] int tmp_ndt_8; [L1057] tmp_ndt_8 = __VERIFIER_nondet_int() [L1058] COND TRUE tmp_ndt_8 == 0 [L1064] return (0); [L265-L266] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L268] COND TRUE disketteExtension__FloppyThread != 0 [L271] disketteExtension__FloppyThread = 0 [L272] Irp__IoStatus__Status = 0 [L273] myStatus = 0 [L274] COND TRUE s == NP [L275] s = SKIP1 [L282] Irp__CurrentLocation ++ [L283] Irp__Tail__Overlay__CurrentStackLocation ++ [L284] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L938] int returnVal2 ; [L939] int compRetStatus1 ; [L940] int lcontext = __VERIFIER_nondet_int() ; [L941] unsigned long __cil_tmp7 ; [L944] COND FALSE !(\read(compRegistered)) [L957] int tmp_ndt_12; [L958] tmp_ndt_12 = __VERIFIER_nondet_int() [L959] COND TRUE tmp_ndt_12 == 0 [L970] returnVal2 = 0 [L983] COND FALSE !(s == NP) [L987] COND FALSE !(s == MPR1) [L996] COND TRUE s == SKIP1 [L997] s = SKIP2 [L998] lowerDriverReturn = returnVal2 [L1006] return (returnVal2); [L284] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L284] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L430] PagingReferenceCount -- [L431] COND TRUE PagingReferenceCount == 0 [L434] return (ntStatus); [L740] RET, EXPR FloppyPnp(devobj, pirp) [L740] status = FloppyPnp(devobj, pirp) [L750] COND TRUE pended == 1 [L751] COND FALSE !(s == NP) [L758] COND TRUE pended == 1 [L759] COND FALSE !(s == MPR3) [L766] COND TRUE s != UNLOADED [L767] COND TRUE status != -1 [L768] COND FALSE !(s != SKIP2) [L782] COND TRUE pended == 1 [L783] COND TRUE status != 259 [L784] CALL errorFn() [L65] CALL reach_error() [L3] __assert_fail("0", "floppy_simpl3.cil-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 309 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 143.2s, OverallIterations: 40, TraceHistogramMax: 1, AutomataDifference: 90.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13532 SDtfs, 17787 SDslu, 24890 SDs, 0 SdLazy, 47491 SolverSat, 5834 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 866 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 501 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=852occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 39 MinimizatonAttempts, 2061 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 47.3s InterpolantComputationTime, 2265 NumberOfCodeBlocks, 2265 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2143 ConstructedInterpolants, 0 QuantifiedInterpolants, 654331 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...